---
title: "Shopify Removed session.currentSession.staffMemberId from POS UI Extensions (2026-10): 2026-09-17 | Harbyn"
description: "Shopify Removed session.currentSession.staffMemberId from POS UI Extensions (2026-10), announced Sep 17, 2026."
canonical: "https://harbyn.com/changes/shopify/2026-09-17-removed-session-currentsession-staffmemberid-from-pos-ui-extensions-2026-10"
last-updated: 2026-09-29
---

# Shopify Removed session.currentSession.staffMemberId from POS UI Extensions (2026-10)

Markdown version of <https://harbyn.com/changes/shopify/2026-09-17-removed-session-currentsession-staffmemberid-from-pos-ui-extensions-2026-10>.

Breaking change - Shopify. medium severity. Announced.

POS UI Extensions API version 2026-10 removes session.currentSession.staffMemberId, deprecated in 2026-07. Before targeting 2026-10, read session.staffMember.value?.id or subscribe to session.staffMember; extensions on 2026-07 and earlier are unaffected.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [Shopify](https://harbyn.com/vendors/shopify.md) |
| Kind | Breaking change |
| Severity | medium |
| Status | Announced |
| Announced | Sep 17, 2026 |
| Added to Harbyn | Sep 29, 2026 |
| Lead time | No dated deadline |
| Symbols | `currentSession.staffMemberId` |
| Vendor page | <https://shopify.dev/changelog/removed-session-currentsession-staffmemberid-from-pos-ui-extensions-2026-10> |
| Review | Reviewed by a person, extracted by a deterministic parser |

## Find it in your code

```sh
npx harbyn scan
```

This change names no identifier the scanner can match line by line, so the scan tells you whether your repository uses Shopify, from its packages and API hosts. Nothing leaves your machine.

## Sources

Where this event comes from: the page we read, when we read it, and the hash of that snapshot.

- <https://shopify.dev/changelog/feed.xml> (changelog, fetched 2026-09-29 02:31 UTC, sha256 `cffd0e2982368954baa11898a7f99a4fc4032b50b36c6137b67385ebc4443f58`)

## Related changes

### More from Shopify

- [UI extensions need API version 2026-01 or later to deploy after October 1; bundle size exceptions](https://harbyn.com/changes/shopify/2026-09-17-request-a-bundle-size-exception-for-existing-ui-extensions.md) (Deprecation, effective Oct 1, 2026)
- [Updates to Events payloads and subscription configuration](https://harbyn.com/changes/shopify/2026-09-16-updates-to-events-payloads-and-subscription-configuration.md) (Breaking change, effective Sep 16, 2026)
- [The automaticDiscounts query is removed in API version 2027-01](https://harbyn.com/changes/shopify/2026-09-18-the-automaticdiscounts-query-is-removed-in-api-version-2027-01.md) (Retirement, announced Sep 18, 2026)
- [family\_name is optional for B2B orders in Payments Apps API requests](https://harbyn.com/changes/shopify/2026-09-15-family-name-is-optional-for-b2b-orders-in-payments-apps-api-requests.md) (Behavior change, announced Sep 15, 2026)

### Changes at other vendors

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- [Supabase: four CBC-mode TLS 1.2 cipher suites will be removed from project HTTP APIs](https://harbyn.com/changes/supabase/2026-10-12-an-outdated-subset-of-tls-1-2-ciphers-will-be-disabled-on-project-http-apis.md) (effective Nov 10, 2026)
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- [Bitbucket Cloud API: Git Credential Manager upgrade required for OAuth 2.0 Git authentication](https://harbyn.com/changes/bitbucket/2026-10-13-git-credential-manager-upgrade-required-for-oauth-2-0-git-authentication.md) (effective Nov 30, 2026)

[All upcoming deadlines](https://harbyn.com/deadlines.md)